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Der

Syntax

Der(F,X:INDET):POLY

where F is a polynomial or a rational function.
    

Summary

the derivative of a rational function

Description

This function returns the derivative of F with respect to the indeterminate X.

example

    
Use R ::= Q[x,y];
Der(xy^2,x);
y^2
-------------------------------
Define Jac(F)  --> The Jacobian matrix for a polynomial.
  Return Mat([[Der(F,X) | X In Indets()]]);
EndDefine;
Jac(xy^2);
Mat[
  [y^2, 2xy]
]
-------------------------------
Der(x/(x+y),x);
y/(x^2 + 2xy + y^2)
-------------------------------
        
    

See Also